Window operator-screw type



L. TOTH 2,636,727

April 28, 1953 WINDOW OPERATOR SCREW TYPE 3 Sheets-Sheet l Filed Aug. 6,1949 April 28, 1953 L, TOTH 2,636,727

WINDOW OPERATOR SCREW TYPE Filed Aug. 6, 1949 3 Sheets-Sheet 2 nner itor44 LOU/S 70TH Clttor egs April 28, -1953 Filed Aug. 6, 1949 L. TOTHWINDOW OPERATOR SCREW TYPE 3 Sheets-Sheet 3 A38 3nneutor Lows To TH W/065 a fl (Ittornegs Patented Apr. 28, 1953 orr ca 2,636,727 WINDOWOPERATOR-SCREW TYPE I Louis Toth, Stamford, Conn.

x 1 Application August 6, 1949, Serial No. 108,965

This invention relates to window operating devices and is applicable tovarious typesof'windows having movable sashes, such as the slidingsashes of double hung .windows and windows having tilting or projectedsashes. r

In accordance with the present invention, means are provided forapplying thepower for moving the movable window sashes by means ofrotatable threaded spindles mounted in the window jambs and providedwith suitable gearing for rotating the same. Connections are made fromthe spindles to the movable sashes. In the case of vertical slidablesashes, traveling nuts are connected to the sashes by brackets. Inthecase of projected or swinging windows, traveling nuts are provided"which are connected to the sashes by meansof pivoted operating arms orlinks. In both instances, means are provided for separate- 1y adjustingthe operating mechanism at each side of the 'movable sash so as tosecure proper equalization of movement and smooth action.

It is a common practice to mount a series of movable sashes one abovetheother in a single frame, and in such cases, while it is possible toprovide "a complete separate operating unit for each sash, it isfrequently desirable to operate all ofthe sashes by a unitary operatingmeans. In such instances, a single pairof threaded spindles may bemounted to operate the entire vertical series of sashes. In accordancewith the present inventiqn, .such spindles are. made in longitudinally.adjustable sections .so that proper adjustment may be made with respectto eachv sash to insure proper opening and closing thereof.

Means arej'also preferably provided whereby any sash operating meansmaybe disconnected so that one or moresashes may be leftclosed, whilethe remaining sashes are opened. I These features may beused foroperation flof either sliding or swingingsashes. l

In .the accompanying drawings, certain preferred embodiments of theinvention are shown for the purpose of illustrating the principlesthereof but it will be understood that the invention may be utilized inother formsand modifled in details as may be required.

Inthe accompanying drawings: n

' Figure 1 is a front elevation of a pair of double hung windo wsembodying oneform of the in-.-v vention, '-parts being broken away; r fFigure .2 is avertical sectionon jthe line 2-4 ofFigure 1;

A Figure. 3 is iahorizontal sectlon. on the line 3-3 ofFigurel; H I MFigure 4 isa horizontal secti'onion the line 4-4; Figural? 5 Claims.(01. 268-21) 2 Figure 5 is a horizontal section on the line 5-5 ofFigure 1; Figure 6 is avertical section of one of the end sill boxes; iFigure 7 is a diagrammatic view in transverse vertical section, showinga series of projected sashes mounted one above the other in a windowopening;

Figure 8 is similar view, showing one of sashes and the operating meanstherefor;

Figure 9 is a transverse section on the line 9--9 of Figure 8; w Figure10 is a fragmentary vertical section on the line Ill-10 of Figure 9; andv Figure 11i is a fragmentary vertical section showing an operatingspindle with a modified form of adjustment.

Referring to the drawing in detail, and particularly' to Figures 1 to 6,the windows comprise an upper sash 20 and a lower sash 22, the ope;erating mechanism being shown as designed to raise and lower only thelower sash. Obviously, provision could be made for operating the uppersash also, or the sashes might be balanced against,

one another so as to be simultaneously moved in opposite directions, ina well understood man-L ner. Thesashes are mounted in frames com'-prising hollow metallic sills 24, ,lintels 26f'and jambs 28 and 30, thejambs 30 being shown in this instance as combined to form a mullion 32.The operating means comprise a pair of threaded spindles 34, one at eachside of the window, and means for rotating the spindles. structionshown, the spindles are mounted at th' top in bearing brackets3'6'fix'ed in the jiarnbs which ,arereinforced where the brackets areattached by reinforcing plates 31. At the bottom. the spindles aremounted in thrust bearings 38, preferably. of ball or roller type, whichare mounted in gear boxes in the sills. The movable sash'is providedwith brackets 40 carrying nuts 42 which travel on the threaded spindlesas the latter are rotated. Means are provided for sep-j aratelyadjusting the spindles so that the movable sash may be properly leveledup so as to travel freely in the jambs. Such means preferably permit ofadjustment after the mounting of the windows so that in case of someslight dis-.

tortion of the window frames, the sashes may still be so adjusted as tohave the desired free travel. n

In the construction shown, very simple and ef fective adjusting meansare provided in which the threaded part of the spindle may be adjusted.lengthwise with respect to the spindle base or.

bottom portion. Such adjusting means com- In the con-- prise forming thelower end of the spindle 34 and the upper end of the spindle portion 44,each as a half-round projection 66, such projections being provided withinterlocking horizontal teeth 48. The two overlapping spindle endportions 46 are received in a sleeve 50, the lower end of which isthreaded and engaged with threads 52 on the spindle portion 44. Thesleeve holds the two spindle portions firmly locked together in anydesired adjustment. When it is desired to change the adjustment, thesleeve 50 is unscrewed from the threads 52 and slid upwardly above thehalved-together spindle ends, which may then be separated and the upperspindle portion moved up or down a distance of one or more of the teethuntil the desired adjustment is reached. The sleeve 50 is then slid downover the halved-together spindle portions carries at its opposite endfrom the gear '56, a

gear, 60, the two gears 50 being so spaced as to mesh with a bevel gear'62 carried on a fitting 54 having a squared head 56 adapted to beengaged by a socket in an operating handle .68 which is provided with acrank 78 or. other means for rotating the same. .The gears 54 and 56 aremounted in sill boxes 12 in the bottoms of which are located the thrustbearings 33 supporting the lower ends of the spindle portions 34. Theseboxes also carry bearings for the ends of shafts 58. At an intermediateportion of the sill, usually at the center thereof, is a gear box itwhich carries bearings 16 in which the adjacent ends of the shafts 58are J'ournal'ed. Projecting from the front of the gear box is a bearingsleeve 18 in which the fitting 64 carrying the gear 32 is rotatablymounted. The end of the sleeve I8 projects through an opening in thefront of the em, as shown at 80.

The jambs preferably incorporate the vertical boxes 84 in which thethreaded spindles are mounted, such boxes preferably being provided withremovable cover sections 86 which may be taken all for adjustment orlubrication of the spindles. The mullion 32 .is preferably provided witha double box having a removable cover 88 which encloses the adjacentspindles of two adjoining sashes.

Referring to Figures 7 to 10. this shows the operator as applied to aprojected type of window. Each of the projecting sashes I is pivoted atits upper end to sliding head blocks 162 by pivots IN. The blocks I02slide in guides in the window jambs. The windovvs are also provided witharms 106 which are pivoted at their lower ends by fixed pivots I08 tothe window jambs. At their upper ends, the arms I are pivoted by pivotsH0 to the sashes. For projecting and re tracting the sashes, operatingarms or links I I2 are provided which are pivoted at their outer 'endsby pivots 'IM to brackets Ht on the sashes.

shoes I28 are attached to the nuts I20. At the,

upper ends of the boxes are bearing brackets 1'30 in which the upperends of the spindles are journaled. The spindles are of multiple partconstruction, the parts of which may be longitudinally adjusted so as toprovide for adjustment of the position of the operating nuts I20 at thetwo sides of each of the sashes, thereby enabling the sashes to beadjusted so as to open and close truly, even though the window frame maybe slightly deformed while being incorporated in the building. Thespindle sections may be provided with halved-together extensions I32provided with interlocking teeth I34 and enclosed by a threaded sleeveI36 similar to the construction of the adjustable spindle shown inFigures .1 to 6.

Where a series of sashes are mounted one above the other, as. shown inFigure 7, the spindles are preferably made in sections, one section foreach sash, and the several sections being relatively adjustablelongitudinally, as shown in Figure 8. Guides may be'inounted at inter-'vals so' as to guide the several sections, one such guidebeing'indica'ted at I31 in Figure 18. While of course it would bepossible to provide a com plete separate operating unit for each s ash,,it is preferable to operate all of the sashesin a vertical series "froma single pair of sectional spindles. By making the sectional spindlesadjustable, it is possible to associate the spindle sections in such away that each of the sashes will be opened and closed properly when thespindles are rotated. If there were :no adjust;- ment, anyirregularities in manufacturing or mounting might prevent one or more ofthe sashes from closing tightly when the othersash is closed. .1

In order to enable the operating .meanstol-be disconnected from anyparticular sash tar-sashes which it may be desired to leave closed, noteof split construction may be utilized a's .shown in Figures '9 and 10.Such nuts are split along one side, the two split portions being securedtogether by threaded studs I38. To provide sufficient flexibilit betweenthe. side, portions or the nut, slots are preferably formed there: in atthe sides opposite to the split portions. To spread the nuts open soasjto disconnect them from the spindles, separating studsj lz may beemployed, the clamping studs 1'38 being ,iirst loosened. I g

Figure 11 shows an alternative arrangement for adjusting the spindlesections. In this case. the spindle sectionsare held together with. abuilt I which slides in a vertical slot 156 in one of thespindle'sections. The spindle sections may be drawn together or movedapart by the right and left screw I48, the right and leftthreaded notions ofwhichscrew into the ends "or the two mtjacent spindle portions.

For rotating the spindles, suitable gearing may be provided which maybethe same as the bevel gear arrangement mounted in the window sill, as

shown. in Figures 1, 2 and 3.

detail, it is to be understood that changes may be made therein and theinventionembodied in other structures. it is not,jtherefore, theintention to limit the patent to the s ecific constructions muse;

- trated, but to cover jtheiinvention broadly in whatever form" itsprinciple may be'utili'zed;.j

I claim:

1. Window operating means for movablesashe comprising a threaded spindlemounted ateach swept the window, nut-member's mounted on acsavar on;operative,- connections .from theiirespe'ctive' nutmemberstotheadjacent. side'sgof the sash, gearing mounted onthewindowstructure forirotating the spindles in unison, each spindle comprisingupper and ,lowerportions having overlapping notched ends of cylindricalsection, and a sleeve having a cylindrical bore slidably mounted on andenclosing said ends, one part of the spindle being screw threaded andsaid-sleeve having a screw thread toengage therewith and "hold thesleeve in postion'to lock the spindle ends in "adjusted position saidscrew threaded part of the spindle being mounted in bearings locatednear each end thereof, one of said bearings being near the adjustingsleeve and overlapping ends of the spindle parts, so as to provide anadjustable spindle assembly held in accurate alignment.

2. In an operator for projected windows said window comprising framesincluding jambs and movable sashes in the frames, a vertically extendingbox connected to the window jamb, bearings therein, a rotary threadedspindle mounted in said bearings, a vertical guide mounted in said box,a nut for engagement with said spindle having a shoe mounted to slide insaid guide, a link pivoted at one end to said nut and at the other endto the sash, gearing carried by the window structure for rotating saidspindle, said nut being split through one side thereof, a screw engagingportions of the nut at each side of the split for drawing the halves ofthe nut together so as to cause the same to engage the threads on thespindle, and a second screw screwing in a portion of the nut for forcingthe nut open so as to disengage the threads on the spindle.

3. In a window operator, a Window frame and sashes mounted in a verticalseries therein, said window frame including jambs, a rotary threadedspindle mounted adjacent to at least one of said jambs, saidspindlecomprising a series of screw threaded sections one for each sash, saidsections being mounted in axial alignment and secured together in anaxially adjustable manner by securing and adjusting means, said meanscomprising overlapping ends of half-round cylindrical section at theadjacent ends of the spindle sections, and a'sleeve having a cylindricalbore slidably mounted on and enclosing said ends, a bearing carried bythe window frame for the upper end of the upper spindle section and abearin carried by the window frame for the lower end of the lowerspindle section, intermediate bearings carried by the window jambs,therebeing anintermediate bearing provided for each intermediate spindlesection engaging said section near the upper end thereof, a travelingnut mounted on each spindle section and adapted to travel over athreaded part of said section between the sleeve at the lower end of thesection and the supportbearing near the upper end of said section, meansconnecting each nut to its respective sash, and means forrotating saidspindle about its, axis,

said adjustable connections between said sections comprising: a; series:of screwthreaded sections one for each sash, said sections beingmounted,

in axial alignment and secured together in axially adjustablearrangement by securing and adjusting means, said means comprisingoverlapping notched ends of half-round cylindrical section at theadjacent ends of the spindle sections, and a sleeve having a cylindricalbore slidably mounted on and enclosing said ends, a bearing carried bythe window frame for the upper end of the upper spindle section and abearing carried by the window frame for the lower end of the lowerspindle section, a series of intermediate bearings carried by the windowjambs one for each intermediate spindle section engaging said sectionnear the upper end thereof below the notched end thereof engaged by saidsleeve, a traveling nut mounted on each spindle section and adapted totravel over a threaded part of said section between the sleeve at thelower end of the section and the supporting bearing near the upper endof said section, a link connecting each nut to its respective sash,means for rotating said spindle about its axis, said adjustableconnections between said sections in cooperating with said end andintermediate bearings maintaining said shaft sections in alignmentagainst the strains of torque applied by said spindle rotating means,and. lateral thrust due to action of said sash operating links on saidnuts, a vertical guideway carried by at least one window jamb adjacentto a spindle mounted thereon, each nut incorporating a shoe mounted toslide vertically in said guideway' and assist in maintaining thealignment of said spindle sections.

5. In a window operator for projected sashes, a window frame and sashesmounted in vertical series therein, said window frame including jambs, arotary threaded spindle mounted adjacent to at least one of said jambs,said spindle comprising a series of screw threaded sections, one foreach sash, said sections being mounted in axial alignment and securedtogether in axially adjustable arrangement by securing and adjustingmeans, said means comprising overlapping notched ends of half-roundcylindrical section at the adjacent ends of the spindle sections, and asleeve having a cylindrical bore slidably mounted on and enclosing saidends, a bearing carried by the window frame for the upper end of theupper spindle section and a bearing carried by the window frame for thelower end of the lower spindle section, an intermediate bearing carriedby the Window jambs for each intermediate spindle section engaging saidsection near the upper end thereof below the notched end thereof engagedby said sleeve, a travelling nut mounted on each spindle section andadapted to travel over a threaded part of said section between thesleeve at the lower end of the section and the supporting bearing nearthe upper end of said section, a link connecting each nut to itsrespective sash, means for rotating said spindle about its axis, saidadjustable connections between said sections in cooperation With saidend and intermediate bearings maintaining said shaft sections inalignment against the strains of torque applied by said spindle rotatingmeans and lateral thrust due to action of said sash operating links onsaid nuts, a vertical guideway carried by at least one window jambadjacent to a spindle mounted thereon, each nut incorporating a shoemounted to slide vertically in said guideway and assist in maintainingthe alignment of said spindle sections, and means for selectivelyengaging or disengag ins/each nut mm threaded engagemgpflwifih :ita

, .1; Aug: 6, 1935 Kraft 4.----- Aug; 13 1935 Mosley Dec. 28,?1937 WileyMay 16, 1939* FOREIGN PATENTS f v Country Date I GreatBritain d. Aug"30, 1905 Australia Feb. 12,1940 Great Britain Sept.;25, 1936 FranceMay'3. 19 37

